4G Backup Internet for Business Explained

4G backup internet keeps your business connected when your main broadband fails. Here's everything you need to know about setting it up correctly.

What is 4G backup internet?

A secondary mobile data connection that activates automatically if your primary broadband or fibre fails. Uses a 4G SIM in a failover router — no manual action needed.

Which networks do you use?

We use multi-network SIMs that automatically roam across EE, O2, Vodafone and Three. If one network has a local outage, the SIM switches to another without any intervention.

Is 4G fast enough?

4G typically delivers 30-100Mbps in good coverage areas — sufficient for VoIP, card payments, email and cloud software. 5G delivers 300Mbps+ where available. We check signal at your premises first.

How much data do you need?

For failover use — covering the time until your main line is repaired — 20-50GB per month suits most SMEs. We monitor usage and alert you to anomalies.

What does 4G backup cost?

Assure X with 4G failover starts from £35/month including hardware, multi-network SIM, remote monitoring and proactive UK support.

5G vs 4G failover

5G is faster but coverage is still primarily urban. For most businesses outside city centres, 4G delivers reliable failover performance. We'll recommend the right option for your location.